CN103095385A - Cellphone power meter - Google Patents

Cellphone power meter Download PDF

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Publication number
CN103095385A
CN103095385A CN201210584822XA CN201210584822A CN103095385A CN 103095385 A CN103095385 A CN 103095385A CN 201210584822X A CN201210584822X A CN 201210584822XA CN 201210584822 A CN201210584822 A CN 201210584822A CN 103095385 A CN103095385 A CN 103095385A
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China
Prior art keywords
mobile phone
cellphone
antenna
power meter
attenuator
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Application number
CN201210584822XA
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Chinese (zh)
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CN103095385B (en
Inventor
黄恒绥
覃洋
黎英征
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GUANGXI SHENRUI TECHNOLOGY Co Ltd
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GUANGXI SHENRUI TECHNOLOGY Co Ltd
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Priority to CN201210584822.XA priority Critical patent/CN103095385B/en
Publication of CN103095385A publication Critical patent/CN103095385A/en
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Publication of CN103095385B publication Critical patent/CN103095385B/en
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Abstract

The invention discloses a cellphone power meter which comprises a cellphone and is characterized by further comprising an attenuator, a feeder head and a computer, wherein a signal output end of the attenuator is connected with an antenna interface of the cellphone or a signal input port of the cellphone through a tieline, the signal output end of the feeder head is connected with an signal input end of the attenuator through a variable line, the computer is connected with a cellphone data interface through a universal serial bus (USB) data line and is provided with power measurement software. According to the cellphone power meter, a cheap business cellphone terminal is mounted into the cellphone power meter, subcircuit nodes of an antenna feed system are inserted, and output power of the nodes is measured. Meanwhile, by combining hollow measurement information of the terminal and expanding software at an end of a personal computer (PC), functions of real-tine display, problem positioning assistant, parameter optimization and guide of a waveshape picture are realized, skills of site problem-disposing are improved, maintenance and optimization of a network are well conducted, quality of the network is improved, satisfaction of cellphone users is enhanced, and breakdown of the antenna feed system is solved accurately with less cost and in a high speed.

Description

The mobile phone power meter
Technical field
The present invention relates to a kind of electrical measuring instrument, especially power meter.
Background technology
Cellular system is the widest land public access mobile radio of coverage.In cellular system, the overlay area generally is divided into a plurality of residential quarters of similar honeycomb.Fixing base station is set in each residential quarter, forwards service for the user provides access and information, so the sane degree direct influence user's of its operation experience perception.
The mobile communication base station comprises base station combining and distribution unit and chamber inside/outside antenna-feedback system two parts, combining and distribution unit comprises coupling allocation units module CDU, Simple Combiner Unit module SCU, strengthens duplexing unit module EDU module, and antenna-feedback system comprises wire jumper, feeder line, antenna, tower amplifier etc.
The most common failure of antenna-feedback system has:
1) performance of antenna, parameter can not satisfy instructions for use;
2) joint sealing is not tight, makes steam enter feeder line, affects the signal emission;
3) decorating position is unreasonable, as close interference source;
4) transmitter power surpasses antenna power rating, makes the antenna overload or burns;
5) suffer foreign object strike, changed the original structure and performance parameters of antenna;
6) cable end not prison welding, signal cuts in and out;
7) controlling antenna wave beam to point departs from, mast or support off normal etc.
Common processing method:
1) change antenna;
2) change cable, and strictly press operation requirements with waterproof or self-adhesion marine glue the joint good seal;
3) interference source far away, antenna and the tower bar that erects a television antenna are at a distance of greater than using wavelength;
4) change the large antenna of rated power;
5) sending producer back to repairs;
6) again change cable end, carefully weldering is drawn and is prevented rosin joint;
7) adjust antenna direction, recovery support, again fastening.
The accurate reason that produces of orientation problem can be with less cost, speed customization faster, implement solution more accurately.
Failures of antenna feed system investigation instrument commonly used is VSWR tester SiteMaster at present, is used for distance and the return loss value of location return loss point.Return loss: it is the inverse of reflection coefficient absolute value, represents with decibel value.To between infinity, the larger expression coupling of return loss is better at 0dB for the value of return loss.0 expression total reflection, infinitely great expression is coupling fully.In mobile communication system, General Requirements return loss is greater than 14dB.Shortcoming is Portable belt not, and apparatus expensive, about 100,000 RMB left and right, and inconvenience popularizes.
Digital power meter commonly used can be used to test the actual average power of 1-1000 watt.Be used for cellular basestation, individual Advanced Mobile Phone System PCS AMPS, code division multiple access CDMA, global system for mobile communications GSM, time division multiple access access TDMA, interactive storage media ISM, Universal Mobile Telecommunications System UMTS and third generation wireless systems WLL paging, and routine/private radio systems, aviation electronics, military affairs and analog/digital audio-video-frequency broadcast.Can show forward and reverse power or other optional parameters with numeral simultaneously, the scale of 20 lattice simulation simultaneously shows the forward power reading.Show test mode, unit, sensor type, super scope, battery status and functions of shortcut key.Reading can with watt, dB(return loss) or the %(matching factor) represent.The voltage standing wave ratio reading can calculate automatically by forward and reverse performance number, in order to antenna is checked quickly and easily.But the same application that has the system that is not easy to, the unfavorable factors such as apparatus expensive, and only have the function of power test, limited to the effect of failures of antenna feed system investigation location work.
Summary of the invention
The purpose of this invention is to provide a kind of cost low, can fast measure the mobile phone power meter of node power output in antenna-feedback system, the failures of antenna feed system problem of the CDMA (Code Division Multiple Access) GSM/TD-SCDMA mobile communication network that positioning global mobile communication system/time-division is synchronous.
For reaching above-mentioned purpose, technical scheme of the present invention is:
A kind of mobile phone power meter, it comprises mobile phone, characterized by further comprising:
The attenuator that signal output part is connected with described antenna for mobile phone interface or signal input by patchcord;
Signal output part connects by becoming wiring the feeder line head that described attenuator signal input connects;
Be connected with Mobile phone data interface by the usb data line, and contain the computer of power measurement software.
Described patchcord is the SMA-K wiring.
Described attenuator is several, can be by mutually nested string by completing connection between each attenuator.
Described feeder line head be 1/2 feeder line head of N interface or DIN interface 7/8 feeder line first two, select wherein a kind of feeder line head according to the interface of the feeder line of site environment.
Described feeder line head is connected in series with the measured node of antenna-feedback system.
Described computer is notebook computer.
Described power measurement software comprises power demonstration and graphical module, simulation antenna-feedback system link block, metrical information module and solution record and statistical analysis module.
the mobile phone power meter of above structure, cheap commercial mobile phone terminal is adapted as the mobile phone power meter, the branch node of access antenna-feedback system, measure the power output of this node, while is in conjunction with the metrical information of eating dishes without rice or wine of terminal, by expansion PC end software, realize the real-time demonstration of power output oscillogram, positioning problems is auxiliary, the functions such as parameter optimization guiding, improve the skill of in-situ processing problem, carry out maintenance of network and Optimization Work, improve network quality, promote cellphone subscriber's satisfaction, with less cost, speed solves the fault of antenna-feedback system accurately faster.
Figure of description
Fig. 1 is structural representation of the present invention;
In the drawings, mobile phone 1, attenuator 2,1/2 feeder line head 3,7/8 feeder line heads 4, simulation antenna-feedback system link block 5, solution record and statistical analysis module 6, metrical information module 7, power shows and graphical module, usb data line 9.
Embodiment
Below in conjunction with Figure of description, the invention will be further described.
Shown in Figure 1, be structural representation of the present invention, as we know from the figure, the present invention is made of hardware components and software section, as shown in two dotted line frames.Wherein, hardware components comprises mobile phone 1, attenuator 2,1/2 feeder line head 3 and 7/8 feeder line head 4, and notebook computer; Software section comprises the power measurement software in the notebook computer of setting: power shows and graphical module 8, simulation antenna-feedback system link block 5, metrical information module 7 and solution record and statistical analysis module 6.Annexation between each several part is:
Mobile phone 1 by the test port patchcord, turns the SMA-K interface with the antenna for mobile phone test port, and this SMA patchcord is under 800MHz～3GHz operating frequency, and loss is about 0.5dB.The effect of mobile phone is mainly the wireless network signal that receives from the test node of antenna opening input, and automatically show exporting in Cellphone Project Model about the signaling information of wireless network in signal, and export the notebook computer data-interface to by the USB connecting line and carry out collection analysis by software.Above effect can be completed automatically by mobile phone, need not to carry out specific aim transformation and upgrading;
Attenuator 2 after guaranteeing the mobile phone connecting system, can not damage or cause other safety accident because input power exceeds the maximum range generation, needs to confirm the maximal input of antenna-feedback system branch road peak power output and mobile phone.Huawei's equipment peak power output is 63W, approximately 47.99341dBm; Ericsson's equipment peak power output is 47dBm, about 50.11872W, and the mobile phone side is because lacking the valid data sources, and maximal received power is temporarily with 2W, and approximately the peak power output of 33dBm is as reference.Get peak power output 48dBm, need increase at least the attenuator of a 15dBm, and common fixed value attenuator mostly is 10dB, 20dB, 30dB, therefore adopt the 20dB decay.Yet, because there is the Read Range restriction in the received signal strength value of the engineering mode of commercial mobile phone, usually-just can normally understand below 40dBm, therefore, need 48-(-40)=decay of 88dB, the i.e. attenuator of 3 30dBm.Turn the N-K patchcord by SMA-K between attenuator 2 and mobile phone 1 and complete and be connected, can complete connection by mutual serial connection is nested between each attenuator;
The feeder line head, 4 two kinds, the 7/8 feeder line head that is divided into 1/2 feeder line head 3 of N interface or DIN interface, when measuring, select 1/2 feeder line head 3 of corresponding N interface or 7/8 feeder line head 4 of DIN interface according to the feeder line kind of site environment, the feeder line head is serially connected with on the measurement branch node of antenna-feedback system, make the measurement electric current flow through mobile phone, thereby measure power.Because the delivery outlet type of attenuator 2 is the SMA-J type, transfer the N-type interface to therefore need to turn the N-K adapter by a SMA-K.Turn simultaneously the adapter of DIN type because of the deficient SMA in market, therefore by adopting N to turn the DIN interface, realize that indirectly the SMA mouth is to the switching of DIN mouth.SMA-K turns the loss that N-K brings and is about 0.2dB.The standing wave that N-J turns DIN-K is 1.1, and under the operating frequency of 0～7.5GHz, the loss that brings is about 0.15dB.
Power measurement software, power measurement software comprise that power shows and graphical module 8, simulation antenna-feedback system link block 5, metrical information module 7 and solution record and statistical analysis module 6.In the notebook computer that this power measurement software arranges, connect mobile phone by usb data line 9 and carry out serial communication, for the mobile phone power meter provides expanded function, be mainly used in auxiliary investigation antenna-feedback system problem.The main contents of each functional module are as follows:
1) power shows and graphical module 8, and its major function is the demonstration incoming level, and is scaled Wave crest and wave trough value and curve chart thereof after power;
2) simulation antenna-feedback system link block 5, its major function are that loss value and other connection parameter that each switching part brings is set, and present the theoretical power output of access node;
3) the metrical information module 7, its major function is the information of processing and display measurement, as: global residential quarter indicates global measuring value RxlevFull, the local measurements RxlevSub of received signal strength, the global measuring value RxQualFull that receives speech quality, the local measurements RxQualSub, the transmitting power TxPower that receive speech quality, the time slot TimeSlot equivalence of CGI, Broadcast Control Channel frequency BCCH, base station identity code BSIC, Traffic Channel frequency TCH, received signal strength;
4) solution record and statistical analysis module 6, its major function is for carrying out data statistic analysis, for follow-up work provides reference scheme more accurately.
Being connected between mobile phone 1 and notebook computer picks out by usb data line 9 from data in mobile phone mouth end, the USB interface of access notebook computer.This interface is mainly the transfer of data such as the power output, metrical information of the base station carrier that mobile phone for measuring is arrived to notebook computer.Power measurement software shows these metrical informations at computer screen, and carries out graphical treatment, intuitively embodies to the user.
Being connected between mobile phone 1 and attenuator 2 with antenna for mobile phone mouth or antenna measurement mouth, is connected with the output of attenuator by the SMA patchcord, is mainly the input of conduction mobile phone signal.
Mobile phone 1 also can be connected with the measurement branch node of base station feed line mouth by attenuator 2, and the feeder line interface of soon base station feed line access antenna is extracted with the input port of attenuator and is connected, and can measure the power output of base station.
The operation principle of mobile phone power meter of the present invention is:
In the mobile phone energy, the antenna for mobile phone socket is not when inserting external antenna, the center pole shell fragment of antenna and the built-in aerial of mobile phone are connected, use the wireless signal of base station emission, if plug external antenna, the shell fragment of center pole just cuts off with built-in aerial and connects with the center pole of external antenna, thereby uses the wireless signal of feeder line output.Be connected with the antenna for mobile phone test port in the feeder line head measurement mechanism SMA interface end that is connected with attenuator, the DIN interface end is connected with the feeder line delivery outlet of measured node, mobile phone obtains the wireless signal of base station input by wired connection, can show the intensity of input signal after processing in the handset processes device in engineering mode, being connected with notebook computer by the USB line transfers to the power measurement analysis software with the radio network information after handset processes.Power measurement software is by measuring, collect, analyze the wireless signal that feeder line exports mobile phone to, draw after treatment the power information of this measured node, the base station information of wireless network, notebook power measurement software compares power and the theoretical value that measures, do not carry out alarm, the problem that prompting may occur and corresponding investigation scheme as difference in preset range.Thereby complete the location to the failures of antenna feed system problem of mobile communication network, export simultaneously solution.
For example: the mobile network is in the weak signal investigation of indoor distributed system, after the transmit receive antenna of base station leg is removed, the feeder line mouth connects the DIN interface of upper mobile phone power meter, the SMA interface connects the antenna delivery outlet of upper mobile phone, the USB line connects mobile phone and computer, can obtain the antenna opening power output of this node by power measurement software.As, Ericsson's base station rack delivery outlet transmitting power is 47dBm, through power splitter, after the entities such as feeder line, theoretical value should be 33dBm, suppose that measured value is that delivery outlet power is normal in the skew 2dBm of error for 31dBm, the power measurement analysis software can point out output normal, the problem of an emphasis investigation transmitting antenna, suppose that delivery outlet power is 15dBm, larger with the power difference of the theoretical output of this node, the software alarm should be investigated the power situation of power splitter or other nodes, and then carries out positioning problems.

Claims (7)

1. mobile phone power meter, it comprises mobile phone, characterized by further comprising:
The attenuator (2) that signal output part is connected with described antenna for mobile phone interface or signal input by patchcord:
Signal output part connects by becoming wiring the feeder line head (3,4) that described attenuator (2) signal input part connects;
Be connected with Mobile phone data interface by usb data line (9), and contain the computer of power measurement software.
2. mobile phone power meter according to claim 1 is characterized in that:
Described patchcord is the SMA-K wiring.
3. mobile phone power meter according to claim 1 is characterized in that:
Described attenuator (2) is several, can be by mutually nested string by completing connection between each attenuator (2).
4. mobile phone power meter according to claim 1 is characterized in that:
Described feeder line head is (4) two kinds, the 7/8 feeder line head of 1/2 feeder line head (3) of N interface or DIN interface.
5. mobile phone power meter according to claim 1, is characterized in that
Described feeder line head (3 or 4) is connected in series with the measured node of antenna-feedback system.
6. mobile phone power meter according to claim 1, is characterized in that
Described computer is notebook computer.
7. mobile phone power meter according to claim 1, is characterized in that
Described power measurement software comprises that power shows and graphical module (8), simulation antenna-feedback system link block (5), metrical information module (7) and solution record and statistical analysis module (6).
CN201210584822.XA 2012-12-30 2012-12-30 Cellphone power meter Expired - Fee Related CN103095385B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106211224A (en) * 2016-07-27 2016-12-07 武汉虹信技术服务有限责任公司 The standing wave Fault Locating Method of radio communication indoor distributed system and system
CN107817417A (en) * 2016-09-14 2018-03-20 中国电信股份有限公司 Obstacle point detecting method and system and test equipment

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CN1159278A (en) * 1994-07-26 1997-09-10 艾利森电话股份有限公司 Antenna and feeder cable tester
US6337975B1 (en) * 1999-04-02 2002-01-08 Qualcomm Inc. System and method for power measurement in outdoor antenna units
CN101115267A (en) * 2007-08-02 2008-01-30 上海宽岱电讯科技发展有限公司 3rd generation mobile communication multi-system combined equipment
CN101312576A (en) * 2007-05-23 2008-11-26 上海国欣科技发展有限公司 Centralized monitoring device with antenna feedback lines and control method thereof
CN101741481A (en) * 2008-11-21 2010-06-16 ***通信集团河南有限公司 Antenna feeder system performance test method and device
CN101777957A (en) * 2010-01-12 2010-07-14 宋海 Method for measuring signal power of joint by using cellphone

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1159278A (en) * 1994-07-26 1997-09-10 艾利森电话股份有限公司 Antenna and feeder cable tester
US6337975B1 (en) * 1999-04-02 2002-01-08 Qualcomm Inc. System and method for power measurement in outdoor antenna units
CN101312576A (en) * 2007-05-23 2008-11-26 上海国欣科技发展有限公司 Centralized monitoring device with antenna feedback lines and control method thereof
CN101115267A (en) * 2007-08-02 2008-01-30 上海宽岱电讯科技发展有限公司 3rd generation mobile communication multi-system combined equipment
CN101741481A (en) * 2008-11-21 2010-06-16 ***通信集团河南有限公司 Antenna feeder system performance test method and device
CN101777957A (en) * 2010-01-12 2010-07-14 宋海 Method for measuring signal power of joint by using cellphone

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106211224A (en) * 2016-07-27 2016-12-07 武汉虹信技术服务有限责任公司 The standing wave Fault Locating Method of radio communication indoor distributed system and system
CN106211224B (en) * 2016-07-27 2019-05-10 武汉虹信技术服务有限责任公司 Wirelessly communicate the standing wave Fault Locating Method and system of indoor distributed system
CN107817417A (en) * 2016-09-14 2018-03-20 中国电信股份有限公司 Obstacle point detecting method and system and test equipment

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